We create products that ensure information and automation are trustworthy, accountable, and reliable. Building @predictablecode

Seattle / Cádiz
Joined February 2025
Predictable Machines retweeted
AI can write code faster than ever. But can it prove the code does what it is supposed to do? At @Lambda_World, David Mazarro & Raúl Raja @raulraja from @AIPredictable ask exactly that in “Towards Multi-language Program Verification for AI”. Generating software is becoming easy. TRUSTING it is hard. 29–30 Oct, 2026 Torremolinos, Malaga. Spain #Lean4 #FormalMethods #AI #LambdaWorld
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Predictable Machines retweeted
Maybe it's because I'm obsessed with the topic, but it feels like everyone in AI is suddenly talking about verification 🤓. Not all verification is the same, though. Most of what labs ship today is probabilistic: agents cross-checking each other, one model grading another's work. It scales to fuzzy, human problems, and honestly, it's the only thing that does. But you get confidence levels, never guarantees. At @AIPredictable, we're betting on deterministic verification. Mathematical methods that give you a binary answer: does the code do what the spec says? Yes or no. We generate specs, translate them into Lean, and formally verify every possible theorem about expected behavior. Not just the happy path. It doesn't apply to everything. Ask it a philosophical question, and it's useless. But for code in banking, pharma, or healthcare, where "probably correct" doesn't cut it, the game changes. So, honest question: is probabilistic verification enough for what you're building, or do you need the math?
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Predictable Machines retweeted
The last article of the #AICodePainPoints series is done! (For now, because every improvement in this field brings new issues with it.) This time, it's about what happens when a developer clicks Merge on AI-generated code reviewed by another AI. What are they actually approving? And in regulated industries, who carries the weight when something breaks? The accountability didn't disappear. It just concentrated in one click.
AI writes the code. AI reviews the code. A developer clicks "merge" in under 10 minutes. In that single click, all the legal and regulatory liability concentrates in one human, for code they didn't write and couldn't fully read.
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Predictable Machines retweeted
Uno de los amigos que ayer hizo demo fue @Jorge__Galindo con su @AIPredictable . Está escribiendo unos blogposts majos sobre cómo su bicho ayuda a solventar los pain points habituales de programar con IA, pero en su caso con clientes corporate para cosas serias (no el vibecodeo de pachanga que flexeamos por aquí). Echadle un ojo, que merece la pena aprender sobre el curro que tiene el garantizar que tienes unas specs capaces de superar auditorías corporate, y no un markdown slopeado de esos... predictablemachines.com/blog…
Replying to @diegomarino
no me puedo juntar con mis panas... tras el anuncio del ficha estrella, he visto 3 demos de productos que están lanzando/haciendo con IA... y yo ahora a enviar IRLs para comerme varias duedils antes de verano 😭 joder qué descolgado me estoy quedando de la vida...
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Predictable Machines retweeted
If you are curious about knowing the different pain points we see in the ai generated code, and how we think we can help, this series of articles could be interesting to you 😊
Every team has a doc that's quietly become a lie. The README wasn't updated when the API changed. The Notion page from six months ago. We used to shrug at it. Then we started pasting it into Claude as context for the next feature.
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Predictable Machines retweeted
Software engineers, PMs, designers, and CS / ML / MBA students: We're doing a Startup Fair @ Startup Day 2026. Builders from @getclarify @yoodli @ItsClearlyAI @AIPredictable and more will talk product, tech, and their roles. No recruiters. May 15. Free.
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Predictable Machines retweeted
Boring code meets exciting new tech 😮
We just open-sourced lean4-json-schema: derive JSON Schema from Lean 4 types, with a compile-time proof that serialization always validates against it. No more trusting. The compiler checks it. 🧵 predictablemachines.com/blog…
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Predictable Machines retweeted
I'm lucky to be part of a founding team with people in tech for the second time in my life. 15 years later, the important parts are still the same. But the context has changed, and it says a lot about the times. I wrote about what it's like being part of @aipredictable : jorgegalindo.me/en/blog/post…
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Predictable Machines retweeted
AI-generated code moves fast, but consistency is the real challenge. We work at the intersection of software and mathematics, using @leanprover to formally verify that AI-generated code stays aligned with project requirements. Why we chose Lean: predictablemachines.com/blog…
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Predictable Machines retweeted
Lunch might be ongoing but for our sponsors @jetbrains and @AIPredictable its a great chance for speaking the attendees about what they offer and also any potential jobs on offer #sponsors #facetoface #lambdaworld #AI #Kotlin #Ktor #jobsearch
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Predictable Machines retweeted
¡Vamos allá otra vez! Ilusionado como la primera vez. Hapiness is only real when shared. ❤️
The world runs on information, but can we trust it? That question led Justin, Nick, @raulraja, and @Jorge__Galindo to start Predictable Machines, combining AI + formal verification to make information trustworthy, accountable, and reliable.
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Predictable Machines retweeted
It’s an honor to keep building alongside my friends Justin, Nick, and @Jorge__Galindo. We're creating AI you can trust, with code generation and formal verification at the heart of the journey. Follow @AIPredictable for updates. ❤️
The world runs on information, but can we trust it? That question led Justin, Nick, @raulraja, and @Jorge__Galindo to start Predictable Machines, combining AI + formal verification to make information trustworthy, accountable, and reliable.
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